Link to our latest notes and resources:
https://drive.google.com/drive/u/2/folders/15FnZdp3NJ15WmXnkrSWgi5ltd5rUI9Bg
19 Capacitance
19.1 Capacitors and capacitance
Candidates should be able to:
1 define capacitance, as applied to both isolated spherical conductors and to parallel plate capacitors
2 recall and use C = Q/V
3 derive, using C = Q/V, formulae for the combined capacitance of capacitors in series and in parallel
4 use the capacitance formulae for capacitors in series and in parallel
Cambridge International AS & A Level Physics 9702 syllabus for 2025, 2026 and 2027. Subject content
Back to contents page www.cambridgeinternational.org/alevel 32
19.2 Energy stored in a capacitor
Candidates should be able to:
1 determine the electric potential energy stored in a capacitor from the area under the potential–charge
graph
2 recall and use W = 2
1 QV = 2
1 CV2
19.3 Discharging a capacitor
Candidates should be able to:
1 analyse graphs of the variation with time of potential differen
